Most accesses to this map are protected. Add the missing locks (some of which
are in code paths where we wouldn't normally expect concurrent accesses, but
better to be safe).
Signed-off-by: Ian Campbell <ijc@docker.com>
Tests such as TestNoSnapshotLeak were failing in client mode (e.g. using #522)
because we weren't releasing the intermediate refs.
Resolve this by refactoring the existing code which frees the intermediate refs
from `gatewayFrontend.Solve` into a method on `llbBridgeForwarder` and as well
as the original site also call from the solver when the top-level solve (in
clientside frontend mode) completes. The original call (which is via a defer)
could likely sensibly be moved either earlier or later if desired but leave it
here it is to minimise the scope of the change.
The previous code used the `retErr` named return but the code between that
point and the end of the function already ensured that `lbf.err` is the same as
`retErr`, thus the only change in the code which has moved is
`s/retErr/lbf.err/`. Note that the `res` named return was previously unused by
name.
Fixes#581.
Signed-off-by: Ian Campbell <ijc@docker.com>
This allows builder code to be written which can be built as either a gateway
container or in a purely client side configuration, giving implementors more
flexibility.
Now when `Solve` sees a request with neither a definition nor a frontend
specified it will make the job available via new LLBBridge endpoints on the
control socket which the client can then use. These end points require the job
id to be present in the gRPC metadata and a client side object is added to
facilitate this.
The `llbBridgeForwarder` type is now exposed as a public `interface
LLBBridgeForwarder` which satisfies the underlying gRPC server interface
(`pb.LLBBridgeServer`) as well as a new `Done()` & `Result()` pair which can be
used to wait for the client to call `Return()` (using a model similar to
`context.Context`).
Signed-off-by: Ian Campbell <ijc@docker.com>
Reorder the code slightly so that an error returned by the call to the
`BuildFunc` is picked up by the `defer`d error handling.
Signed-off-by: Ian Campbell <ijc@docker.com>
Refactor the setting/getting of the result for a `llbBridgeForwarder` in order
to check that `Return` is only called once and only with the correct options.
Signed-off-by: Ian Campbell <ijc@docker.com>
Provide a `New` method and a new `Run` method on the `grpcClient` to allow
manual creation of a client in addition to the current ability to initialise
from the environment. Accordingly the existing `Run` method becomes
`RunFromEnvironment`.
Signed-off-by: Ian Campbell <ijc@docker.com>
Tonis Tiigi
Tibor Vass
Akihiro Suda
Kunal Kushwaha
Akihiro Suda
Ian Campbell